As Hong Kong authorities move to clear the most volatile of three protest areas, Beijing is exploring ways to address public unhappiness with the electoral revamp package that sparked the nearly two-month-long protests, a person familiar with the discussions said.

Advisers and officials in Beijing are focusing on the nominating committee that will select candidates running for Hong Kong’s chief executive post in 2017, according to this person with knowledge of the matter. They are considering adjusting the committee’s...